Too damn early

So yesterday I spent 5 hours in the library and accomplished NOTHING. Then got frustrated and went to the bar with a few friends. It was a fun relaxing night but I still have nothing done... I actually made it to my first class today. I am sort of worried because I only have a year and a half left of school (not counting this semester) and I feel like I know nothing. Granted I just picked up my major last year but the crazy amount of debt I'm in is not worth knowing nothing. Maybe that's why I feel I've given up on school....